Lennox Boiler Reviews | Consumer RatingsLennox Boiler Reviews - Lennox offers boilers in efficiency ranges from 80% AFUE to 95% AFUE* in both oil-fired hot water boilers and gas-fired boilers. The Lennox name is recognized with furnaces and air conditioners more than hot water boilers, but they have a long tradition of offering total comfort systems for residential and light commercial uses including producing hot water boilers.

Lennox Boiler Reviews | Consumer Ratings

Lennox offers several different types of boilers, including their most efficient boiler, which is a modulating condensing boiler that offers efficiency ratings up to 95% AFUE. Modulating means the boiler runs at a firing rate according to demand, and the condensing boiler leeches out as much heat as possible. A condensing boiler utilizes so much heat it produces the can use an approved low-temperature venting. Venting such as PVC or CPVC where a conventional boiler vents much more heat that requires high-temperature venting materials to vent the combustion byproducts.

What is an Outdoor Reset Control?

An outdoor reset control is a device that changes the setpoint on your boiler based on the outside air temperature. It has been tested extensively and is a proven method of reducing energy consumption therefore saving on energy costs. In some regions, if you have an outdoor reset control, you qualify for energy and tax credits/rebates.


Various features for hot water boilers include:

  • Cast aluminum heat exchangers for better heat exchange over cast iron in selected hot water boilers
  • Sealed combustion designs in selected hot water boilers
  • Energy Star ratings on selected hot water boilers
  • Compact designs in selected hot water boilers
  • Electronic ignition
  • Automatic vent dampers on selected hot water boilers
  • Optional domestic hot water coils for providing hot water for domestic use on selected hot water boilers.

Lennox Boiler Reviews | Consumer Ratings - About Lennox

Lennox started in 1895 with a riveted steel furnace and eventually began producing other home comfort products. They boast more than 60 home comfort products in the HVAC product line-up. They also produce light commercial products for businesses.

Boiler Reviews | Consumer Ratings

Lennox Boiler Reviews | Consumer Ratings

*For all efficiency ratings please visit the AHRI website database for manufacturer’s certification for efficiency for a specific model number appliance. AHRI is the certifying and testing agency responsible for the efficiency ratings with the HVAC industry.